Commercial solar for manufacturing.

Manufacturers are some of the heaviest electricity users on any commercial estate. Compressors, motors, process heat, extraction, lighting and machinery draw a high, steady current from the moment the line starts, and that demand is the single biggest variable input cost most factories cannot easily reduce. A roof-mounted solar array offsets it directly, at source, with no fuel and no moving parts.

For an operator running over 50 kWp of demand, that makes solar worth modelling properly. The case does not turn on roof size or panel count. It turns on how well generation lines up with the load underneath, and on a manufacturing site that match tends to be strong, because the machines are running exactly when the sun is on the roof.

Solar pays best when generation is consumed on site rather than exported, because a unit used on the line offsets an expensive import unit, while an exported unit is paid far less. The return therefore tracks the load shape rather than the array size. Manufacturing has one of the strongest shapes of any sector. Continuous process and machinery load runs through the working day, so a high share of generation is self-consumed and very little is exported. A single-shift factory uses most of what it makes during daylight. A two or three-shift operation, or one running continuous process plant, draws a heavy baseload that solar tops up rather than spills.

That said, the picture varies by operation. A site with a long seasonal shutdown, a single early shift, or a load that peaks after dark will self-consume less than one running flat through the day, and we size for the profile we actually find. Where the daytime match is weaker, we look at whether battery storage shifts generation into a later shift or the evening, rather than overbuilding a roof that would export cheaply. We say so plainly before anything is specified.

Manufacturing tends to occupy large, single-occupier buildings, the same footprint we work across in industrial units, so the array sits on one continuous roof under one meter, which keeps the design clean and the cabling runs short. As an indicative orientation only, factory systems often fall in the 150 kWp to 1 MWp+ range, though that band is a guide rather than a quote. The real figure comes from the on-site survey and the half-hourly load model, not from a roof estimate. Older works and former mill stock can carry lower structural loading or fragile roof coverings, so the survey checks what the structure will take before any array is sized, and the design works around plant, extraction stacks, rooflights and any roof already crowded with services.